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Who discovered the law of gravity when an apple fell on his head?
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How many chromosomes are there in a human cell?
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Who discovered radium and later died from the effects of experiments with X-rays?
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What travels at 2,997,924,580 metres per second?
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What is Johann Gutenberg’s famous invention?
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Who discovered penicillin?
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Where do veins bring blood?
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What is Alfred Nobel’s famous invention?
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Water is one of the most (1) ____ resources we have, but how often do we take time to (2) ____ it? That's why the United Nations started International World Water Day (IWWD).
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The 1992 United Nations Conference on Environment and Development recommended an international day to (3) ____ freshwater. The United Nations General Assembly decided this was important and (4) ____ 22 March World Water Day.
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The UN website says IWWD is "a means of focusing attention (5) ____ the importance of freshwater and advocating for the sustainable management of freshwater resources." On IWWD, people should not use their taps for a (6) ____ day to make us understand how important water is.
Read the text and Match choices (A—H) to (1—5).
1) We all enjoy the benefits of the Internet, but if you feel more comfortable with your online friends than your real ones, or you can’t stop yourself from playing games, gambling, or compulsively surfing, even when it has negative consequences in your life, then you may be using the Internet too much.
Read the text and Match choices (A—H) to (1—5).
2) Many people turn to the Internet in order to manage unpleasant feelings such as stress, loneliness, depression, and anxiety. As much comfort as the Internet can provide, though, it’s important to remember that there are healthier (and more effective) ways to keep difficult feelings in check. These may include exercising, meditating, using sensory relaxation strategies, and practising simple breathing exercises.
Read the text and Match choices (A—H) to (1—5).
3) If you’re an unhappy teenager, the Internet might feel more comfortable for you than real-life friends. When you are stressed, you are at risk, too. While some people use the Internet to relieve stress, it can have a counterproductive effect.
Read the text and Match choices (A—H) to (1—5).
4) There are no set hours per day or number of messages sent that indicate Internet addiction. But here are some general warning signals that your Internet use may have become a problem: you frequently find yourself on the Internet longer than you intended; you are having trouble completing tasks at work or home; your social life is suffering because of all the time you spend online; you use the Internet as an outlet when stressed, sad, or for sexual gratification or excitement. Have you tried to limit your Internet time but failed?
Read the text and Match choices (A—H) to (1—5).
5) The following tips are tools to get your Internet use under control. Recognize and try to handle any underlying problems that may support your Internet addiction. Strengthen your friendly relations. The more relationships you have in real life, the less you will need the Internet for social interaction. Replace your Internet usage with healthy activities. Have a plan for other ways to fill the time, such as going to lunch with a friend or taking a dancing class.
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